RPM

last SG · 2004-06-16T15:18:37+00:00

nope. there is lots beyond workshops. most sg workshops wouldn’t even know the main forces which lead to the failure in a given type of engine or be able to...

dcx SG

I realised that my sunny ex saloon abit strange...when my speed is ard 90-100km/hr, my RPM is ard 2100-2200rpm..and when reaching 120km/hr, its rpm is near ard 2.5krpm...y is this? How can i reduce the RPM or rather set it to 2.2-2.3krpm when the speed is 120km/h? Also i found that the fuel consumption is higher when my RPM is high...

I also realised that when picking up, my car is slower compared to any other cars...eg: Hyundai Accent,Matrix,Kia, Lancer,Imprezza, and worse still same car model as me...ex saloon...y is this so??? Rolling Eyes

ditzy SG

They got the tacho all wired wrong? Laughing

ziezoe SG

Get the mechanic to check.
2100-2200rpm at 90-100km/h is a little low, I am surprise your car idle did not cause the car to stall.
Based on efficiencies of gear ratio, 2500rpm is highly unlikely.

Pick up wise, you never know cause the other car may be going on a higher RPM than you, unless you are going for a benchmark test.

dcx SG

huh?wat do you mean? You mean that the 2.1k-2.2krpm at 90-100km/hr is low? I find that quite high becoz i can feel the engine abit loud n rough...n my fuel is consumed faster when i'm at that rpm...has been wondering if can tuned the rpm to 2.1k at 110km/hr or not....

no_speeding SG

U guys never hear before gear ratios??
Engine is loud & rough becoz u got little sound insulation. U try to drive a lexus, at 4000rpm, it will most prob sound as loud as ur sunny at 2000rpm.

Yup, u can tune to 2.1K at 110km/hr.
But first, u must get a bigger engine and a changed gearbox.
Alternatively, juz change a car. Try those 2litres cars...mgt get the 2.1K at 110km/hr.
Shocked

sirlee SG

Hmmm...my car(ignis sport) reach 4000rpm @ 120km/h..cos close ratio.. Very Happy

Perhaps install the Airmax 2 will let u have better fuel consumption..
For those car who is faster than u in picking up is perhaps they "floored" their accelerator?
N perhaps u didnt really floored hard enough?

ziezoe SG

You guys? referring to?

Ghee SG

I thot you could only adjust idling rpm.... the rest very much depend on the engine and transmission gear matching...... can you do that...any expert can throw some lights......

for pickup....think it depend on how you floor your accelerator.... if you are heavy footed, you will go fast.....if you are normal depressing, cant expect the car to fly.....

Juz an opinion.....

ziezoe SG

why did you quote me?

dcx SG

I see…maybe other drivers floored their pedals..i only normal acceleration…so is it normal then that my car is hitting 2.5krpm at 100km/hr-110km/hr???

ziezoe SG

I see you've change the values... yes it is possibe for tacho to register 2500rpm at 100kmh...

tailslide SG

relax. 2k rpms at ard 100 km/hr is low by any measure. i mean, most cars idle at 700 rpms, travel 100 plus km/hr u want rpm to be how low? later stall halfway when u turn on ur headlights and aircon then pengz lor! Laughing btw, my rpms are hitting above 3k rpms around those speeds on 6th gear. Wink

you can only adjust ur idle rpm. no way to change ur rpm vs speed ratio unless u swap out ur gear ratios altogether. these come fixed per car type.

i'd assume u r driving an automatic? its normal for the car to feel "sluggish" when u floor the accelerator compared to a manual one. takes time for the viscous torque convertor to "speed up" compared to the directness of a manual.

when ur rpms are high, naturally ur fuel consumption will be. i'd like to see one that does the opposite. concerned drivers should juz drive slower next time. Rolling Eyes

eutjin SG

i like and totally agree with the last part

buy, a manual car and be real gentle on the accelerator if you're concerned abt fuel consumption

dcx SG

I c i c…dun dare to hit ar 3000rpm…scared my engine might blow any time n fuel comp. high…

Praetorian111 SG

Hahaha will not lar... where is ur red line at?? U can drag the car up to the red line.. and the engine will still not blow... dunno worry....
Wink

Ghee SG

sorrie ziezoe.... peace! Very Happy

ziezoe SG

x2

how to blow an engine at 3000...

sirlee SG

Dun worry, it wont blow.If i'm not wrong yr redline should be ard 6400rpm.so dun worry..my friend floored his civic esi till almost 7600rpm in his first gear,his engine also didnt blow,10 over yrs car somemore...Juz floored once awhile to blow soot..but do it safely of course... Smile

rivereast SG

flooring your accelarator will definitely increase your fuel consumption.

for rpm at any speed (except 0), anything between 2 - 3k you should be fine, else just shift the gear.

dcx SG

haha…actually my definition of blowing off my engine’s abit too extreme….i’m juz afraid that flooring my accel. too much might deteoriate the engine…